Furnace



Feb. 24. 1925.

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. Feb. 24. 1925 v A1,527,81i c. MATLQCK FURNCE l l v Filed oct. 271919 3 sheets-shge a 4 .l/zg. @T f "UIIMHHHH" f 1nd l l /v vi Witness 0 Patented Feb. Z4, i925.

narran s'raras l'lll PATENT FFCE.

CHAUNCEY MATLOCK, OF NEW YORK, N. Y., ASSIGNOR TO GASOLINE CORPQRATION, OF NEWYORK, N. Y., A CORPORATION OF DELAWARE.

FURNACE.

Application led October 2*?, 1919. Serial No. 333,624.

To all whom it may concern.'

Be it known that I, CHAUNCEY MATLOCK, a citizen of the United States, residing at New York city, New York, have invented certain new and useful Improvements in Furnaces, of which I declare the following to be a full, clear, and exact description.

The invention relates to furnaces and particularly to furnaces for use in cracking oils or for similar purposes.

The furnace has been devised especially for the Greenstreet process of crackingr hydrocarbon oils, although it may also be used for other purposes. This process is a continuous one, that is, the oils to be cracked are passed through the furnace continuously as distinguished from the batch processes in which the furnace is first charged, then operated, emptied and recharged again.

The coils or pipes in furnaces for this purpose are subjected to high heat continuously and occasionally must be taken out for inspection and repair or replacement. It is desirable that this inspection or replacement interfere as little as possible with the continuous operation of the furnace.

@ne of the objects of this invention is to provide an improved furnace in which hydrocarbon oils can be cracked continuously.

It is a further object of the invention to provide a. furnace in which the coils thereof may be readily removed for inspection, repair or replacement, without interrupting the operation of the furnace.

Other objects and advantages of the invention will hereinafter appear.

An embodiment of the invention is shown in the accompanying drawings, in which:

Figure l is a longitudinal section of the main body of a furnace;

Fig. 2 is a transverse section;

Figs. 3, 4 and 5 are detail views showing the manner in which the furnace coils are suspended in the particular embodiment illustrated.

The furnace comprises in general enclosing walls l which form the body of the furnace, and a plurality of coil units or sets of coils 2 each of which is suspended in the furnace from a cross beam 3, which also carries a section of the furnace roof 4.

The body of the furnace including the enclosing walls l, of which there are four, is made of any suitable size and shape and of brick or other similar material. The Walls form an enclosure, chamber, or furnace interior 5 in which the coil units 2 are located. rThis chamber is heated from below in the usual manner by means of coal fed into a furnace grate of any suitable standard structure. Any other suitable fuel and appropriate feeding apparatus therefore, may be used if desired. Leading from the chamber 5 is the passage 6 to the stack.

On the outside of the enclosing walls are steel I-beams 7 which assist in supporting the walls of the furnace and also form a frame work upon which the cross beams 3 are supported. Certain of the beams outside of the furnace extend upwardly and form -a frame-work or crane bay 8 for traveling cranes 9, comprising in the embodiment` illustrated trolleys and chain blocks. This frame-work extends sufliciently above the furnace so that each of the coil units may be removed vertically by means of the chain blocks to clear the top of the furnace and it also extends bevond one side of the furnace so that the coil sets may be swung to one side and lowered to the ground.

The coil units 2 are formed of iron pipe or tubing. or other material, each unit being preferably flat and, therefore, occupying very little space laterally. rThe pipe or tubing is of relatively small diameter and a considerable quantity, for example, one hundred feet, is used in each coil set. The coil sets are generally built up by Ijoining the ends of a large number of lengths of pipe by means of semicircular return bends the joints being preferably welded thereby forming in effect one long coil. The bends are constructed and jointed to the pipe lengths so that the interior presents a smooth and unobstructed passage. This feature is important because obstructions of sharp angles interrupt the flow of oils in such a manner that carbon deposits tend to form. Variations in the details of construction of the coil sets can, of course, be made as long as the smooth continuous passage is maintained.

The lengths of coil are held together and properly spaced by links and straps l0 which are supported from the cross beam 3 by suitable clamps 11 shown in detail in Figure 4. Four of these straps for each coil are illustrated, but the number and their exact construction may be varied to suit the requirements. It will be noted that each coil unit is free of the side Walls and bottom of the furnace, and is supported independently, so that it may be removed from the furnace Without disturbing the furnace itself, or any of the other coils in it. This removal may be accomplished by simply hooking thel cranes 9 on the` cross head 5 and lifting the unit bodily until it clears the top of the furnace and then swinging it to one side and lowering it to the ground.

The roof of the furnace is suspended in sections from the cross beams 3 and is removed with the coil units when they taken out. ln the embodimentillustrated, this suspension is accomplished by -mcans of straps lla bolted to clips l2 which are fastened to the beams 3. The straps 1l support a rod 13 upon which blocks of i'ire brick llhaving holes l5 are supported. The lire brick sections are covered with sheet asbestos board which is laid` over the joints between the bricks and this is covered with a layer of insulating cement which serves to retain the heat in the furnace. Each roof section supported by the beams 3 cooperates with the adjacent section so as to form a complete and tight roof. Since each roof section is removed when its coil unit is removed, it is only necessary to li't the cross beams S when it is desired to get out one of the coils because the roof section supported by that beam 3 is raised With the beam and supported by it in such a manner that no particular attention need be paid to it.

The inlets l5 and thel outlets 16 of each of the coil units are brought up through the respective roof sections and attached to the supply and delivery pipes 17 and 18 on the outside of the furnace. This avoids any necessity of disconnecting parts Within the furnace in order to remove a coil.

lt will be apparent that an improved furnace has been provided in which the coil units are independently supported and arranged so that each may be readily removed Without, disturbing the others and Without disturbing the furnace construction. t is necessary only to disconnect the supply and delivery pipes l5 and 16 and to hook the crane 9 on to the cross beam 3 and raise the coil, swing it aside, and loiver it to the ground for inspection and repair. if it is desired to keep the furnace running continuously, another coil may be immediately substituted and used, While the first is being repaired. rfhis enables the furnace to be used continuously Without interruptions for repair or cleaning.

lt is to be understood that the structure shown is for purposes of illustration only, and that other structures may be devised, which come Within the spirit and scope of the invention as set forth in the appended claims.

What I claim is:

l. A furnace having enclosing` Walls, sets of pipe coils, and means for suspending said coil sets in a vertical plane so that each may be removed Without disturbing the others, said means also carrying a section of the furnace roof.

2. A furnace having enclosing Walls, a plurality of flat coils of pipe, means for suspending said coils in a vertical plane adjacent each other so that each may be removed ivithout disturbing the others, said means also serving to support sections of fire brick or the like so that the sections abut each other and form a furnace roof.

3. A furnace having enclosing Walls, a plurality of coil units, a plurality of cross beams, means for suspending the coil units from the cross beams, and means for suspending a section of the furnace roof With each of the coil units, said roof sections arranged so that when the coil units are in place the sections cooperate to form a. coinplete roof.

4. An oil cracking furnace having enclosing Walls, a plurality of coil units coniprising sections of long coils of relatively small diameter and free from obstructions or abrupt angles, and means for suspending each coil unit in a vertical plane, said means also supporting a section of the furnace roof so that when all of the coil units are in position the sections cooperate to form a completed roof.

5. An oil cracking furnace having enclosing Walls, a. plurality of coil units comprising sections of long coil of relatively small diameter and free from obstructions and abrupt angles, cross beams for supporting said coils, means for suspending said coils from the beams, and means for suspending a section of the furnace roof from said beams.

6. An oil cracking furnace having enclosing Walls, a. plurality of coil units, and means for suspending eac-h unit in a vertical plane so that it may be removed Without disturbing the others, said means also serving to support a section of the furnace roof through which the terminals of each coil unit project.

7. An oil cracking furnace having a plurality of coil units, each of which is suspended independently of the others so that each may be removed without disturbing the others, there being a section of the furnace roof suspended with each coil so that the coil may be removed Withoutdisturbing the roof.

8. An oil cracking furnace having enclosing Walls, sets of coils enclosed in said Walls, a roof section above each coil, and means for supporting each coil and corresponding roof section independently so that each may be removed Without disturbing the others.

9. An oil cracking furnace having enclosing walls, continuous coils within said walls, means for supporting said coils at points distributed throughout the extent of said coils and means for suspending said coils and said supporting means independently of each other in such a manner that each coil may be lifted vertically out of the furnace without disturbing the other coils.

l0. An oil cracking furnace having flat coils extending longitudinally within said furnace, vertical straps positioned at intervals on said coils and adapted to support said coils at said intervals and means for supporting the straps of each coil to permit each coil to be lifted vertically out of said furnace independently of the other coils.

1l. An oil cracking furnace, flat coils extending longitudinally within said furnace, supporting beams extending longitudinally above said furnace, vertical straps positioned at intervals on said coils and adapted to support said coils at intervals, the straps of each coil being suspended from a single separate beam.

12. An oil, cracking furnace, fiat coils extending longitudinally within said furnace, vertical straps positioned at intervals on said coils and adapted to support said coils at said intervals, means for supporting the straps of each coil from supporting means exterior of said furnace and unitary heat resisting sections positioned in said furnace below said straps.

V 13. An oil cracking furnace having a roof composed of a series of rows of tile blocks, coils positioned below said rows of blocks, beams extending above said rows of blocks and means for supporting said coils and corresponding rows of blocks from corresponding beams.

14. n an apparatus for treating oils, the ,combination of a coil, a roof section, a rod extending` through said roof section, a supporting beam for said coil and said roof section and means for supporting said coil and the said rod from said roof section.

15. In an apparatus for treating oil, the combination of a fiat coil, a roof section in alignment wvith the plane of said coil, a beam and a means for supporting said coil and said roof section from said beam.

In testimony whereof, I affix my signature.

CHAUNCEY MATLOCK. 

